| Value | Category | Cases | |
|---|---|---|---|
| 1 | not mentioned | 406 | 
                                                                 
                                    
                                    98.5%
                                 
                                                             | 
                                                        
                    
| 2 | mentioned | 6 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 294 |